Nakatafu ☆ / Mbed 2 deprecated BLE_Lightning_sensor

BLE Lightning sensor for Nordic NRF51822 based module

Dependencies:   AS3935 AS3935_ext BLE_API mbed nRF51822 nrf51_rtc

main.cpp@4:8f815f8d804e, 2015-08-30 (annotated)

Committer:
takafuminaka
Date:
Sun Aug 30 12:20:29 2015 +0000
Revision:
4:8f815f8d804e
Parent:
3:2ea547dab8a8
Child:
5:b8961da0d06a
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
takafuminaka 0:371bcac81ea2 1 /*
takafuminaka 0:371bcac81ea2 2
takafuminaka 0:371bcac81ea2 3 */
takafuminaka 0:371bcac81ea2 4
takafuminaka 4:8f815f8d804e 5 #include "string.h"
takafuminaka 4:8f815f8d804e 6
takafuminaka 0:371bcac81ea2 7 #include "mbed.h"
takafuminaka 0:371bcac81ea2 8 #include "nrf51_rtc.h"
takafuminaka 0:371bcac81ea2 9 #include "AS3935_ext.h"
takafuminaka 0:371bcac81ea2 10
takafuminaka 3:2ea547dab8a8 11 #define NEED_CONSOLE_OUTPUT 1 // Set this if you need debug messages on the console;
takafuminaka 3:2ea547dab8a8 12 #define NEED_BLE_CONSOLE 1
takafuminaka 1:a4119049dd99 13
takafuminaka 1:a4119049dd99 14 #if NEED_CONSOLE_OUTPUT
takafuminaka 1:a4119049dd99 15 Serial pc(USBTX, USBRX);
takafuminaka 1:a4119049dd99 16 #define DEBUG(...) { pc.printf(__VA_ARGS__); }
takafuminaka 1:a4119049dd99 17 #else
takafuminaka 1:a4119049dd99 18 #define DEBUG(...) /* nothing */
takafuminaka 1:a4119049dd99 19 #endif /* #if NEED_CONSOLE_OUTPUT */
takafuminaka 1:a4119049dd99 20
takafuminaka 3:2ea547dab8a8 21 #if NEED_BLE_CONSOLE
takafuminaka 3:2ea547dab8a8 22 #include "BLE.h"
takafuminaka 3:2ea547dab8a8 23 #include "UARTService.h"
takafuminaka 3:2ea547dab8a8 24 #define BLEC(...) { char __blecstr[32]; sprintf(__blecstr,__VA_ARGS__); if (uart) uart->write(__blecstr, strlen(__blecstr)); }
takafuminaka 3:2ea547dab8a8 25 #else
takafuminaka 3:2ea547dab8a8 26 #define BLEC(...) /* nothing */
takafuminaka 3:2ea547dab8a8 27 #endif /* #if NEED_BLE_CONSOLE */
takafuminaka 1:a4119049dd99 28
takafuminaka 3:2ea547dab8a8 29 #if NEED_BLE_CONSOLE
takafuminaka 3:2ea547dab8a8 30 // Prepare BLE device
takafuminaka 3:2ea547dab8a8 31 const uint8_t DEVICE_NAME[] = "BLE Ligttning Sensor";
takafuminaka 3:2ea547dab8a8 32 #endif // #if NEED_BLE_CONSOLE
takafuminaka 1:a4119049dd99 33
takafuminaka 1:a4119049dd99 34
takafuminaka 1:a4119049dd99 35 // Prepare LED device
takafuminaka 1:a4119049dd99 36 DigitalOut led1(LED1);
takafuminaka 1:a4119049dd99 37 DigitalOut led2(LED2);
takafuminaka 1:a4119049dd99 38
takafuminaka 0:371bcac81ea2 39 AS3935_ext Lightning(I2C_SDA0,I2C_SCL0,0x00,P0_23);
takafuminaka 0:371bcac81ea2 40 InterruptIn IntLightning(P0_23); //IRQ AS3935
takafuminaka 0:371bcac81ea2 41
takafuminaka 0:371bcac81ea2 42 // used for the example only, not required for rtc use
takafuminaka 0:371bcac81ea2 43 DigitalIn button1(BUTTON1); // used to trigger the time report
takafuminaka 0:371bcac81ea2 44 InterruptIn button1Press(BUTTON1);
takafuminaka 0:371bcac81ea2 45
takafuminaka 3:2ea547dab8a8 46 // event record buffer struct
takafuminaka 3:2ea547dab8a8 47 const int s_evrecord=10;
takafuminaka 3:2ea547dab8a8 48 struct t_evrecord {
takafuminaka 3:2ea547dab8a8 49 public:
takafuminaka 3:2ea547dab8a8 50 int event;
takafuminaka 3:2ea547dab8a8 51 time_t time;
takafuminaka 3:2ea547dab8a8 52 int distance;
takafuminaka 3:2ea547dab8a8 53
takafuminaka 3:2ea547dab8a8 54 t_evrecord() {
takafuminaka 3:2ea547dab8a8 55 event = 0;
takafuminaka 3:2ea547dab8a8 56 time = 0;
takafuminaka 3:2ea547dab8a8 57 distance = 0;
takafuminaka 3:2ea547dab8a8 58 }
takafuminaka 3:2ea547dab8a8 59 } evrecord[s_evrecord];
takafuminaka 0:371bcac81ea2 60
takafuminaka 0:371bcac81ea2 61 time_t example_time() {
takafuminaka 0:371bcac81ea2 62 // set an intial time
takafuminaka 0:371bcac81ea2 63 // ...not really necessary for this example, but it beats setting it to 0 or some non-obvious large integer (# of seconds since 1/1/1970)
takafuminaka 0:371bcac81ea2 64 time_t rawtime=0;
takafuminaka 0:371bcac81ea2 65
takafuminaka 0:371bcac81ea2 66 struct tm * init_timeinfo;
takafuminaka 0:371bcac81ea2 67
takafuminaka 0:371bcac81ea2 68 // initialize time
takafuminaka 0:371bcac81ea2 69 init_timeinfo = localtime(&rawtime); // note: must initialize the struct with this before trying to set components
takafuminaka 0:371bcac81ea2 70 // ...else code goes into the weeds!!
takafuminaka 0:371bcac81ea2 71 init_timeinfo->tm_sec = 0;
takafuminaka 0:371bcac81ea2 72 init_timeinfo->tm_min = 0;
takafuminaka 0:371bcac81ea2 73 init_timeinfo->tm_hour = 0;
takafuminaka 0:371bcac81ea2 74 init_timeinfo->tm_mon = 0;
takafuminaka 0:371bcac81ea2 75 init_timeinfo->tm_mday = 1;
takafuminaka 2:e1e638cbf972 76 init_timeinfo->tm_year = 70;
takafuminaka 0:371bcac81ea2 77
takafuminaka 0:371bcac81ea2 78 char date[24];
takafuminaka 0:371bcac81ea2 79 strftime(date,sizeof(date),"%H:%M:%S on %m/%d/%G",init_timeinfo);
takafuminaka 1:a4119049dd99 80 DEBUG("Initial time set is %s.\r\n",date);
takafuminaka 0:371bcac81ea2 81
takafuminaka 0:371bcac81ea2 82 // compute the proper value for time in time_t type
takafuminaka 0:371bcac81ea2 83 rawtime = mktime(init_timeinfo);
takafuminaka 0:371bcac81ea2 84 return rawtime;
takafuminaka 0:371bcac81ea2 85 }
takafuminaka 1:a4119049dd99 86
takafuminaka 0:371bcac81ea2 87 void print_time() {
takafuminaka 0:371bcac81ea2 88 // called when a button is pushed, this prints the current time to the USB-connected console
takafuminaka 0:371bcac81ea2 89
takafuminaka 0:371bcac81ea2 90 time_t rawtime=rtc.time();
takafuminaka 0:371bcac81ea2 91
takafuminaka 0:371bcac81ea2 92 // massage the time into a human-friendly format for printing
takafuminaka 0:371bcac81ea2 93 struct tm * timeinfo;
takafuminaka 0:371bcac81ea2 94 timeinfo = localtime(&rawtime);
takafuminaka 0:371bcac81ea2 95 char date[24];
takafuminaka 0:371bcac81ea2 96 strftime(date,sizeof(date),"%H:%M:%S on %m/%d/%G",timeinfo);
takafuminaka 1:a4119049dd99 97 DEBUG("The current time is %s.(%d)\r\n",date,rawtime);
takafuminaka 0:371bcac81ea2 98 }
takafuminaka 0:371bcac81ea2 99
takafuminaka 1:a4119049dd99 100 void periodic_update() {
takafuminaka 0:371bcac81ea2 101 // for use as interrupt routine, to insure that RTC is updated periodically
takafuminaka 0:371bcac81ea2 102 // ...if rtc is not read before the underlying counter rolls over (typically 512 seconds), the RTC value will be wrong
takafuminaka 0:371bcac81ea2 103 // ...ideally this would be done as part of the nrf51_rtc method, but I couldn't get it to behave (see nrf51_rtc.cpp for details)
takafuminaka 0:371bcac81ea2 104 rtc.time();
takafuminaka 1:a4119049dd99 105 Lightning.lightningDistanceKm();
takafuminaka 1:a4119049dd99 106 led1 = !led1;
takafuminaka 1:a4119049dd99 107
takafuminaka 0:371bcac81ea2 108 // print_time();
takafuminaka 0:371bcac81ea2 109 }
takafuminaka 0:371bcac81ea2 110
takafuminaka 3:2ea547dab8a8 111 #if NEED_BLE_CONSOLE
takafuminaka 3:2ea547dab8a8 112 BLEDevice ble;
takafuminaka 3:2ea547dab8a8 113 UARTService *uart;
takafuminaka 3:2ea547dab8a8 114 static Gap::ConnectionParams_t connectionParams;
takafuminaka 3:2ea547dab8a8 115 int buff_flash_flag;
takafuminaka 3:2ea547dab8a8 116
takafuminaka 3:2ea547dab8a8 117 void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) // Mod
takafuminaka 3:2ea547dab8a8 118 {
takafuminaka 3:2ea547dab8a8 119 DEBUG("Disconnected handle %u!\n\r", handle);
takafuminaka 3:2ea547dab8a8 120 DEBUG("Restarting the advertising process\n\r");
takafuminaka 3:2ea547dab8a8 121 led2 = 0;
takafuminaka 3:2ea547dab8a8 122 ble.gap().startAdvertising();
takafuminaka 3:2ea547dab8a8 123
takafuminaka 3:2ea547dab8a8 124
takafuminaka 3:2ea547dab8a8 125 }
takafuminaka 3:2ea547dab8a8 126
takafuminaka 3:2ea547dab8a8 127 void onConnectionCallback(const Gap::ConnectionCallbackParams_t *params)
takafuminaka 3:2ea547dab8a8 128 {
takafuminaka 3:2ea547dab8a8 129 DEBUG("connected. Got handle %u\r\n", params->handle);
takafuminaka 3:2ea547dab8a8 130
takafuminaka 3:2ea547dab8a8 131 connectionParams.slaveLatency = 1;
takafuminaka 3:2ea547dab8a8 132 led2 = 1;
takafuminaka 3:2ea547dab8a8 133 if (ble.gap().updateConnectionParams(params->handle, &connectionParams) != BLE_ERROR_NONE) {
takafuminaka 3:2ea547dab8a8 134 DEBUG("failed to update connection paramter\r\n");
takafuminaka 3:2ea547dab8a8 135 }
takafuminaka 3:2ea547dab8a8 136 buff_flash_flag = 1;
takafuminaka 3:2ea547dab8a8 137
takafuminaka 3:2ea547dab8a8 138 }
takafuminaka 3:2ea547dab8a8 139
takafuminaka 3:2ea547dab8a8 140 void onDataWritten(const GattWriteCallbackParams *params)
takafuminaka 3:2ea547dab8a8 141 {
takafuminaka 4:8f815f8d804e 142 char buff[21];
takafuminaka 3:2ea547dab8a8 143 if ((uart != NULL) && (params->handle == uart->getTXCharacteristicHandle())) {
takafuminaka 3:2ea547dab8a8 144 uint16_t bytesRead = params->len;
takafuminaka 3:2ea547dab8a8 145 DEBUG("received %u bytes\n\r", bytesRead);
takafuminaka 3:2ea547dab8a8 146 strncpy((char*)buff,(char*)params->data,bytesRead);
takafuminaka 3:2ea547dab8a8 147 // ble.updateCharacteristicValue(uart->getRXCharacteristicHandle(), params->data, bytesRead);
takafuminaka 4:8f815f8d804e 148 // ble.updateCharacteristicValue(uart->getRXCharacteristicHandle(), buff, bytesRead);
takafuminaka 4:8f815f8d804e 149
takafuminaka 4:8f815f8d804e 150 if ( strncmp("get time",buff,bytesRead) == 0 ) {
takafuminaka 4:8f815f8d804e 151 time_t rawtime=rtc.time();
takafuminaka 4:8f815f8d804e 152 BLEC("Current Time:%d\n",rawtime);
takafuminaka 4:8f815f8d804e 153 } else if ( strncmp("get record ",buff,strlen("Get Record ")) == 0 ) {
takafuminaka 4:8f815f8d804e 154 int i=atoi(&buff[strlen("Get Record ")]);
takafuminaka 4:8f815f8d804e 155 if ( i >= 0 && i < s_evrecord ) {
takafuminaka 4:8f815f8d804e 156 BLEC("record %1d:%d:%1x:%2x\n",i,evrecord[i].time,evrecord[i].event,evrecord[i].distance);
takafuminaka 4:8f815f8d804e 157 }
takafuminaka 4:8f815f8d804e 158 }
takafuminaka 3:2ea547dab8a8 159 }
takafuminaka 3:2ea547dab8a8 160 }
takafuminaka 3:2ea547dab8a8 161
takafuminaka 3:2ea547dab8a8 162 #endif // if NEED_BLE_CONSOLE
takafuminaka 3:2ea547dab8a8 163
takafuminaka 0:371bcac81ea2 164 void DetectLightning()
takafuminaka 0:371bcac81ea2 165 {
takafuminaka 0:371bcac81ea2 166 char OriginInt;
takafuminaka 0:371bcac81ea2 167 time_t rawtime=rtc.time();
takafuminaka 0:371bcac81ea2 168 struct tm * timeinfo;
takafuminaka 0:371bcac81ea2 169 timeinfo = localtime(&rawtime);
takafuminaka 3:2ea547dab8a8 170 char date[24],sdate[9];
takafuminaka 0:371bcac81ea2 171 int distance;
takafuminaka 0:371bcac81ea2 172
takafuminaka 0:371bcac81ea2 173 strftime(date,sizeof(date),"%H:%M:%S on %m/%d/%G",timeinfo);
takafuminaka 3:2ea547dab8a8 174 strftime(sdate,sizeof(sdate),"%H%M%S",timeinfo);
takafuminaka 0:371bcac81ea2 175
takafuminaka 0:371bcac81ea2 176 wait_ms(2); //on attend 2ms préconisation constructeur
takafuminaka 0:371bcac81ea2 177 OriginInt = Lightning.interruptSource();
takafuminaka 0:371bcac81ea2 178 distance = Lightning.lightningDistanceKm();
takafuminaka 0:371bcac81ea2 179
takafuminaka 4:8f815f8d804e 180 for(int i=1;i<s_evrecord;i++) {
takafuminaka 4:8f815f8d804e 181 evrecord[i] = evrecord[i-1];
takafuminaka 4:8f815f8d804e 182 }
takafuminaka 4:8f815f8d804e 183 evrecord[0].time = rawtime;
takafuminaka 4:8f815f8d804e 184 evrecord[0].event = OriginInt;
takafuminaka 4:8f815f8d804e 185 evrecord[0].distance = distance;
takafuminaka 4:8f815f8d804e 186
takafuminaka 1:a4119049dd99 187 if (OriginInt == 1) {
takafuminaka 1:a4119049dd99 188 led2 = !led2;
takafuminaka 1:a4119049dd99 189 DEBUG("%24s : Noise level too high. %d km\r\n",date,distance);
takafuminaka 0:371bcac81ea2 190 }
takafuminaka 0:371bcac81ea2 191 if (OriginInt == 4) {
takafuminaka 1:a4119049dd99 192 led2 = !led2;
takafuminaka 1:a4119049dd99 193 DEBUG("%24s : Disturber detected. %d km\r\n",date,distance);
takafuminaka 0:371bcac81ea2 194 }
takafuminaka 0:371bcac81ea2 195 if (OriginInt == 8) {
takafuminaka 1:a4119049dd99 196 led2 = !led2;
takafuminaka 1:a4119049dd99 197 DEBUG("%24s : Lightning interrupt %d km\r\n",date,distance);
takafuminaka 0:371bcac81ea2 198 }
takafuminaka 0:371bcac81ea2 199 }
takafuminaka 0:371bcac81ea2 200
takafuminaka 0:371bcac81ea2 201
takafuminaka 0:371bcac81ea2 202 int main(void)
takafuminaka 0:371bcac81ea2 203 {
takafuminaka 3:2ea547dab8a8 204 #if NEED_BLE_CONSOLE
takafuminaka 3:2ea547dab8a8 205 ble.init();
takafuminaka 3:2ea547dab8a8 206 ble.gap().onDisconnection(disconnectionCallback);
takafuminaka 3:2ea547dab8a8 207 ble.gap().onConnection(onConnectionCallback);
takafuminaka 3:2ea547dab8a8 208 ble.gattServer().onDataWritten(onDataWritten);
takafuminaka 3:2ea547dab8a8 209 ble.gap().getPreferredConnectionParams(&connectionParams);
takafuminaka 3:2ea547dab8a8 210
takafuminaka 3:2ea547dab8a8 211 uart = new UARTService(ble);
takafuminaka 3:2ea547dab8a8 212 buff_flash_flag = 0;
takafuminaka 3:2ea547dab8a8 213
takafuminaka 3:2ea547dab8a8 214 #endif // if NEED_BLE_CONSOLE
takafuminaka 3:2ea547dab8a8 215
takafuminaka 3:2ea547dab8a8 216
takafuminaka 1:a4119049dd99 217 led1=0;
takafuminaka 1:a4119049dd99 218 led2=0;
takafuminaka 0:371bcac81ea2 219 int hz=0;
takafuminaka 0:371bcac81ea2 220
takafuminaka 0:371bcac81ea2 221 //initialisations
takafuminaka 2:e1e638cbf972 222 wait(1);
takafuminaka 1:a4119049dd99 223 DEBUG("reset\r\n");
takafuminaka 0:371bcac81ea2 224 Lightning.reset();
takafuminaka 1:a4119049dd99 225 DEBUG("setTuneCap as 5\r\n");
takafuminaka 0:371bcac81ea2 226 Lightning.setTuneCap(5); // Tuning Parameter
takafuminaka 1:a4119049dd99 227 DEBUG("powerup\r\n");
takafuminaka 0:371bcac81ea2 228 Lightning.powerUp();
takafuminaka 2:e1e638cbf972 229
takafuminaka 2:e1e638cbf972 230 DEBUG("set Indoor Mode as 0x0d\r\n");
takafuminaka 2:e1e638cbf972 231 Lightning.registerWrite(AS3935_AFE_GB,0x0d);
takafuminaka 2:e1e638cbf972 232
takafuminaka 1:a4119049dd99 233 DEBUG("Auto Calibration Start\r\n");
takafuminaka 0:371bcac81ea2 234 float minerr = 100;
takafuminaka 0:371bcac81ea2 235 int fincap = 7;
takafuminaka 0:371bcac81ea2 236 for(int i=0;i<16;i++) {
takafuminaka 0:371bcac81ea2 237 Lightning.setTuneCap(i); // Tuning Parameter
takafuminaka 0:371bcac81ea2 238 hz = Lightning.MeasureLCOFreq();
takafuminaka 0:371bcac81ea2 239 float err = (hz-500000.)/500000.*100.;
takafuminaka 1:a4119049dd99 240 DEBUG("%d : hz=%10d Hz (%5.2f%%)\r\n",i,hz,err);
takafuminaka 0:371bcac81ea2 241 if ( abs(err) < minerr ) {
takafuminaka 0:371bcac81ea2 242 minerr = abs(err);
takafuminaka 0:371bcac81ea2 243 fincap = i;
takafuminaka 0:371bcac81ea2 244 }
takafuminaka 0:371bcac81ea2 245 }
takafuminaka 0:371bcac81ea2 246 Lightning.setTuneCap(fincap); // Tuning Parameter
takafuminaka 0:371bcac81ea2 247 wait_ms(100);
takafuminaka 0:371bcac81ea2 248 hz = Lightning.MeasureLCOFreq();
takafuminaka 0:371bcac81ea2 249 float err = (hz-500000.)/500000.*100.;
takafuminaka 1:a4119049dd99 250 DEBUG("Final %d : hz=%10d Hz (%5.2f%%)\r\n",fincap,hz,err);
takafuminaka 3:2ea547dab8a8 251 BLEC("%1x:%10dHz:%5.2f:final\n",fincap,hz,err);
takafuminaka 0:371bcac81ea2 252
takafuminaka 1:a4119049dd99 253 DEBUG("Auto Calibration finished\r\n");
takafuminaka 0:371bcac81ea2 254
takafuminaka 0:371bcac81ea2 255 // user selectable, any time < 512 seconds is OK
takafuminaka 0:371bcac81ea2 256 #define PERIODIC_UPDATE 1
takafuminaka 0:371bcac81ea2 257 Ticker rtc_ticker;
takafuminaka 1:a4119049dd99 258 rtc_ticker.attach(&periodic_update, PERIODIC_UPDATE);
takafuminaka 0:371bcac81ea2 259
takafuminaka 0:371bcac81ea2 260 time_t initial_time = example_time();
takafuminaka 0:371bcac81ea2 261 rtc.set_time(initial_time);
takafuminaka 0:371bcac81ea2 262
takafuminaka 0:371bcac81ea2 263 button1Press.fall(&print_time); // when button1 is pressed, this calls rtc.time() and prints it
takafuminaka 0:371bcac81ea2 264
takafuminaka 0:371bcac81ea2 265 IntLightning.rise(&DetectLightning);
takafuminaka 0:371bcac81ea2 266
takafuminaka 3:2ea547dab8a8 267 #if NEED_BLE_CONSOLE
takafuminaka 1:a4119049dd99 268 /* setup advertising */
takafuminaka 3:2ea547dab8a8 269 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
takafuminaka 3:2ea547dab8a8 270 ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
takafuminaka 3:2ea547dab8a8 271 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME,
takafuminaka 3:2ea547dab8a8 272 DEVICE_NAME, sizeof(DEVICE_NAME) - 1);
takafuminaka 3:2ea547dab8a8 273 ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS,
takafuminaka 3:2ea547dab8a8 274 (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed));
takafuminaka 1:a4119049dd99 275
takafuminaka 1:a4119049dd99 276 ble.gap().setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
takafuminaka 1:a4119049dd99 277 ble.gap().startAdvertising();
takafuminaka 3:2ea547dab8a8 278 #endif // #if NEED_BLE_CONSOLE
takafuminaka 1:a4119049dd99 279
takafuminaka 0:371bcac81ea2 280 while (true) {
takafuminaka 4:8f815f8d804e 281 #if NEED_BLE_CONSOLE
takafuminaka 4:8f815f8d804e 282 ble.waitForEvent();
takafuminaka 4:8f815f8d804e 283 #endif // #if NEED_BLE_CONSOLE
takafuminaka 0:371bcac81ea2 284 }
takafuminaka 0:371bcac81ea2 285 }
takafuminaka 1:a4119049dd99 286